esp_wifi: bringup esp32c2 wifi

components/esp_phy/CMakeLists.txt

@@ -1,10 +1,5 @@
 idf_build_get_property(idf_target IDF_TARGET)
 
-if(IDF_TARGET STREQUAL "esp32c2")
-    # TODO : IDF-3906
-    return()
-endif()
-
 set(srcs "src/phy_override.c" "src/lib_printf.c")
 
 if(CONFIG_APP_NO_BLOBS)
@@ -72,7 +67,7 @@ if(link_binary_libs)
         $<TARGET_FILE:${esp_phy_lib}>)
     endif()
 
-    if(CONFIG_IDF_TARGET_ESP32C3 OR CONFIG_IDF_TARGET_ESP32S3 OR CONFIG_IDF_TARGET_ESP32H2)
+    if(CONFIG_IDF_TARGET_ESP32C3 OR CONFIG_IDF_TARGET_ESP32S3 OR CONFIG_IDF_TARGET_ESP32H2  OR CONFIG_IDF_TARGET_ESP32C2)
         target_link_libraries(${COMPONENT_LIB} PUBLIC btbb)
         target_link_libraries(${COMPONENT_LIB} INTERFACE $<TARGET_FILE:${esp_phy_lib}> libphy.a libbtbb.a
         $<TARGET_FILE:${esp_phy_lib}>)

components/esp_phy/esp32c2/include/phy_init_data.h

@@ -0,0 +1,182 @@
+/*
+ * SPDX-FileCopyrightText: 2016-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef PHY_INIT_DATA_H
+#define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
+#include "esp_phy_init.h"
+#include "sdkconfig.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// constrain a value between 'low' and 'high', inclusive
+#define LIMIT(val, low, high) ((val < low) ? low : (val > high) ? high : val)
+
+#define PHY_INIT_MAGIC "PHYINIT"
+
+// define the lowest tx power as LOWEST_PHY_TX_POWER
+#define PHY_TX_POWER_LOWEST LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 52)
+#define PHY_TX_POWER_OFFSET 44
+#define PHY_TX_POWER_NUM    5
+
+#if CONFIG_ESP_PHY_MULTIPLE_INIT_DATA_BIN
+#define PHY_CRC_ALGORITHM 1
+#define PHY_COUNTRY_CODE_LEN 2
+#define PHY_INIT_DATA_TYPE_OFFSET 126
+#define PHY_SUPPORT_MULTIPLE_BIN_OFFSET 125
+#endif
+
+static const char __attribute__((section(".rodata"))) phy_init_magic_pre[] = PHY_INIT_MAGIC;
+
+/**
+ * @brief Structure containing default recommended PHY initialization parameters.
+ */
+static const esp_phy_init_data_t phy_init_data= { {
+        0x00,
+        0x00,
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x50),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x50),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x50),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x4c),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x4c),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x48),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x4c),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x48),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x48),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x44),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x4a),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x46),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x46),
+        LIMIT(CONFIG_ESP_PHY_MAX_TX_POWER * 4, 0, 0x42),
+        0x00,
+        0x00,
+        0x00,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0xff,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0x74
+} };
+
+static const char __attribute__((section(".rodata"))) phy_init_magic_post[] = PHY_INIT_MAGIC;
+
+#if CONFIG_ESP_PHY_MULTIPLE_INIT_DATA_BIN
+/**
+ * @brief PHY init data control infomation structure
+ */
+typedef struct {
+    uint8_t control_info_checksum[4];     /*!< 4-byte control infomation checksum */
+    uint8_t multiple_bin_checksum[4];     /*!< 4-byte multiple bin checksum */
+    uint8_t check_algorithm;              /*!< check algorithm */
+    uint8_t version;                      /*!< PHY init data bin version */
+    uint8_t number;                       /*!< PHY init data bin number */
+    uint8_t length[2];                    /*!< Length of each PHY init data bin */
+    uint8_t reserved[19];                 /*!< 19-byte reserved  */
+} __attribute__ ((packed)) phy_control_info_data_t;
+
+/**
+ * @brief Country corresponds to PHY init data type structure
+ */
+typedef struct {
+    char cc[PHY_COUNTRY_CODE_LEN];
+    uint8_t type;
+} phy_country_to_bin_type_t;
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PHY_INIT_DATA_H */

components/esp_phy/src/phy_init.c

@@ -36,6 +36,8 @@
 #include "soc/syscon_reg.h"
 #elif CONFIG_IDF_TARGET_ESP32S3
 #include "soc/syscon_reg.h"
+#elif CONFIG_IDF_TARGET_ESP32C2
+#include "soc/syscon_reg.h"
 #endif
 
 #if CONFIG_IDF_TARGET_ESP32
@@ -284,12 +286,12 @@ void IRAM_ATTR esp_wifi_bt_power_domain_on(void)
 {
     _lock_acquire(&s_wifi_bt_pd_controller.lock);
     if (s_wifi_bt_pd_controller.count++ == 0) {
-        CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_WIFI_FORCE_PD);
+//        CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_WIFI_FORCE_PD);
 #if CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S3
         SET_PERI_REG_MASK(SYSCON_WIFI_RST_EN_REG, SYSTEM_BB_RST | SYSTEM_FE_RST);
         CLEAR_PERI_REG_MASK(SYSCON_WIFI_RST_EN_REG, SYSTEM_BB_RST | SYSTEM_FE_RST);
 #endif
-        CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_WIFI_FORCE_ISO);
+  //      CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_WIFI_FORCE_ISO);
     }
     _lock_release(&s_wifi_bt_pd_controller.lock);
 }
@@ -298,8 +300,8 @@ void esp_wifi_bt_power_domain_off(void)
 {
     _lock_acquire(&s_wifi_bt_pd_controller.lock);
     if (--s_wifi_bt_pd_controller.count == 0) {
-        SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_WIFI_FORCE_ISO);
+    //    SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_WIFI_FORCE_ISO);
-        SET_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_WIFI_FORCE_PD);
+      //  SET_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_WIFI_FORCE_PD);
     }
     _lock_release(&s_wifi_bt_pd_controller.lock);
 }

components/esp_wifi/CMakeLists.txt

@@ -41,7 +41,11 @@ if(CONFIG_ESP32_WIFI_ENABLED)
     target_link_libraries(${COMPONENT_LIB} PUBLIC "-L \"${CMAKE_CURRENT_SOURCE_DIR}/lib/${target_name}\"")
 
     if(link_binary_libs)
-        set(blobs coexist core espnow mesh net80211 pp smartconfig wapi)
+        if(CONFIG_IDF_TARGET_ESP32C2)
+            set(blobs coexist core espnow net80211 pp smartconfig)
+        else()
+            set(blobs coexist core espnow mesh net80211 pp smartconfig wapi)
+        endif()
 
         foreach(blob ${blobs})
             add_prebuilt_library(${blob} "${CMAKE_CURRENT_SOURCE_DIR}/lib/${target_name}/lib${blob}.a"

components/esp_wifi/Kconfig

@@ -4,7 +4,6 @@ menu "Wi-Fi"
 
     config ESP32_WIFI_ENABLED
         bool
-        default "n" if IDF_TARGET_ESP32C2 # TODO: replace with SOC_CAPS_SUPPORT_WIFI after IDF-2223 is done
         default "y" if !IDF_TARGET_ESP32H2
 
     config ESP32_WIFI_SW_COEXIST_ENABLE

components/esp_wifi/esp32c2/esp_adapter.c

@@ -0,0 +1,783 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <pthread.h>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/queue.h"
+#include "freertos/semphr.h"
+#include "freertos/event_groups.h"
+#include "freertos/portmacro.h"
+#include "riscv/interrupt.h"
+#include "riscv/riscv_interrupts.h"
+#include "esp_types.h"
+#include "esp_random.h"
+#include "esp_mac.h"
+#include "esp_task.h"
+#include "esp_intr_alloc.h"
+#include "esp_attr.h"
+#include "esp_log.h"
+#include "esp_event.h"
+#include "esp_heap_caps.h"
+#include "esp_timer.h"
+#include "esp_private/wifi_os_adapter.h"
+#include "esp_private/wifi.h"
+#include "esp_phy_init.h"
+#include "soc/rtc_cntl_reg.h"
+#include "soc/rtc.h"
+#include "soc/syscon_reg.h"
+#include "phy_init_data.h"
+#include "esp_private/periph_ctrl.h"
+#include "esp_private/esp_clk.h"
+#include "nvs.h"
+#include "os.h"
+#include "esp_smartconfig.h"
+#include "esp_coexist_internal.h"
+#include "esp_coexist_adapter.h"
+#include "esp32c2/rom/ets_sys.h"
+
+#define TAG "esp_adapter"
+
+#ifdef CONFIG_PM_ENABLE
+extern void wifi_apb80m_request(void);
+extern void wifi_apb80m_release(void);
+#endif
+
+IRAM_ATTR void *wifi_malloc( size_t size )
+{
+    return malloc(size);
+}
+
+IRAM_ATTR void *wifi_realloc( void *ptr, size_t size )
+{
+    return realloc(ptr, size);
+}
+
+IRAM_ATTR void *wifi_calloc( size_t n, size_t size )
+{
+    return calloc(n, size);
+}
+
+static void * IRAM_ATTR wifi_zalloc_wrapper(size_t size)
+{
+    void *ptr = wifi_calloc(1, size);
+    return ptr;
+}
+
+wifi_static_queue_t* wifi_create_queue( int queue_len, int item_size)
+{
+    wifi_static_queue_t *queue = NULL;
+
+    queue = (wifi_static_queue_t*)heap_caps_malloc(sizeof(wifi_static_queue_t), MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
+    if (!queue) {
+        return NULL;
+    }
+
+    queue->handle = xQueueCreate( queue_len, item_size);
+    return queue;
+}
+
+void wifi_delete_queue(wifi_static_queue_t *queue)
+{
+    if (queue) {
+        vQueueDelete(queue->handle);
+        free(queue);
+    }
+}
+
+static void * wifi_create_queue_wrapper(int queue_len, int item_size)
+{
+    return wifi_create_queue(queue_len, item_size);
+}
+
+static void wifi_delete_queue_wrapper(void *queue)
+{
+    wifi_delete_queue(queue);
+}
+
+static bool IRAM_ATTR env_is_chip_wrapper(void)
+{
+#ifdef CONFIG_IDF_ENV_FPGA
+    return false;
+#else
+    return true;
+#endif
+}
+
+static void set_intr_wrapper(int32_t cpu_no, uint32_t intr_source, uint32_t intr_num, int32_t intr_prio)
+{
+    intr_matrix_route(intr_source, intr_num);
+    esprv_intc_int_set_priority(intr_num, intr_prio);
+    esprv_intc_int_set_type(intr_num, INTR_TYPE_LEVEL);
+}
+
+static void clear_intr_wrapper(uint32_t intr_source, uint32_t intr_num)
+{
+
+}
+
+static void set_isr_wrapper(int32_t n, void *f, void *arg)
+{
+    intr_handler_set(n, (intr_handler_t)f, arg);
+}
+
+static void enable_intr_wrapper(uint32_t intr_mask)
+{
+    esprv_intc_int_enable(intr_mask);
+}
+
+static void disable_intr_wrapper(uint32_t intr_mask)
+{
+    esprv_intc_int_disable(intr_mask);
+}
+
+static void * spin_lock_create_wrapper(void)
+{
+    portMUX_TYPE tmp = portMUX_INITIALIZER_UNLOCKED;
+    void *mux = malloc(sizeof(portMUX_TYPE));
+
+    if (mux) {
+        memcpy(mux,&tmp,sizeof(portMUX_TYPE));
+        return mux;
+    }
+    return NULL;
+}
+
+static uint32_t IRAM_ATTR wifi_int_disable_wrapper(void *wifi_int_mux)
+{
+    if (xPortInIsrContext()) {
+        portENTER_CRITICAL_ISR(wifi_int_mux);
+    } else {
+        portENTER_CRITICAL(wifi_int_mux);
+    }
+
+    return 0;
+}
+
+static void IRAM_ATTR wifi_int_restore_wrapper(void *wifi_int_mux, uint32_t tmp)
+{
+    if (xPortInIsrContext()) {
+        portEXIT_CRITICAL_ISR(wifi_int_mux);
+    } else {
+        portEXIT_CRITICAL(wifi_int_mux);
+    }
+}
+
+static bool IRAM_ATTR is_from_isr_wrapper(void)
+{
+    return !xPortCanYield();
+}
+
+static void IRAM_ATTR task_yield_from_isr_wrapper(void)
+{
+    portYIELD_FROM_ISR();
+}
+
+static void * semphr_create_wrapper(uint32_t max, uint32_t init)
+{
+    return (void *)xSemaphoreCreateCounting(max, init);
+}
+
+static void semphr_delete_wrapper(void *semphr)
+{
+    vSemaphoreDelete(semphr);
+}
+
+static void wifi_thread_semphr_free(void* data)
+{
+    SemaphoreHandle_t *sem = (SemaphoreHandle_t*)(data);
+
+    if (sem) {
+        vSemaphoreDelete(sem);
+    }
+}
+
+static void * wifi_thread_semphr_get_wrapper(void)
+{
+    static bool s_wifi_thread_sem_key_init = false;
+    static pthread_key_t s_wifi_thread_sem_key;
+    SemaphoreHandle_t sem = NULL;
+
+    if (s_wifi_thread_sem_key_init == false) {
+        if (0 != pthread_key_create(&s_wifi_thread_sem_key, wifi_thread_semphr_free)) {
+            return NULL;
+        }
+        s_wifi_thread_sem_key_init = true;
+    }
+
+    sem = pthread_getspecific(s_wifi_thread_sem_key);
+    if (!sem) {
+        sem = xSemaphoreCreateCounting(1, 0);
+        if (sem) {
+            pthread_setspecific(s_wifi_thread_sem_key, sem);
+            ESP_LOGV(TAG, "thread sem create: sem=%p", sem);
+        }
+    }
+
+    ESP_LOGV(TAG, "thread sem get: sem=%p", sem);
+    return (void*)sem;
+}
+
+static int32_t IRAM_ATTR semphr_take_from_isr_wrapper(void *semphr, void *hptw)
+{
+    return (int32_t)xSemaphoreTakeFromISR(semphr, hptw);
+}
+
+static int32_t IRAM_ATTR semphr_give_from_isr_wrapper(void *semphr, void *hptw)
+{
+    return (int32_t)xSemaphoreGiveFromISR(semphr, hptw);
+}
+
+static int32_t semphr_take_wrapper(void *semphr, uint32_t block_time_tick)
+{
+    if (block_time_tick == OSI_FUNCS_TIME_BLOCKING) {
+        return (int32_t)xSemaphoreTake(semphr, portMAX_DELAY);
+    } else {
+        return (int32_t)xSemaphoreTake(semphr, block_time_tick);
+    }
+}
+
+static int32_t semphr_give_wrapper(void *semphr)
+{
+    return (int32_t)xSemaphoreGive(semphr);
+}
+
+static void * recursive_mutex_create_wrapper(void)
+{
+    return (void *)xSemaphoreCreateRecursiveMutex();
+}
+
+static void * mutex_create_wrapper(void)
+{
+    return (void *)xSemaphoreCreateMutex();
+}
+
+static void mutex_delete_wrapper(void *mutex)
+{
+    vSemaphoreDelete(mutex);
+}
+
+static int32_t IRAM_ATTR mutex_lock_wrapper(void *mutex)
+{
+    return (int32_t)xSemaphoreTakeRecursive(mutex, portMAX_DELAY);
+}
+
+static int32_t IRAM_ATTR mutex_unlock_wrapper(void *mutex)
+{
+    return (int32_t)xSemaphoreGiveRecursive(mutex);
+}
+
+static void * queue_create_wrapper(uint32_t queue_len, uint32_t item_size)
+{
+    return (void *)xQueueCreate(queue_len, item_size);
+}
+
+static int32_t queue_send_wrapper(void *queue, void *item, uint32_t block_time_tick)
+{
+    if (block_time_tick == OSI_FUNCS_TIME_BLOCKING) {
+        return (int32_t)xQueueSend(queue, item, portMAX_DELAY);
+    } else {
+        return (int32_t)xQueueSend(queue, item, block_time_tick);
+    }
+}
+
+static int32_t IRAM_ATTR queue_send_from_isr_wrapper(void *queue, void *item, void *hptw)
+{
+    return (int32_t)xQueueSendFromISR(queue, item, hptw);
+}
+
+static int32_t queue_send_to_back_wrapper(void *queue, void *item, uint32_t block_time_tick)
+{
+    return (int32_t)xQueueGenericSend(queue, item, block_time_tick, queueSEND_TO_BACK);
+}
+
+static int32_t queue_send_to_front_wrapper(void *queue, void *item, uint32_t block_time_tick)
+{
+    return (int32_t)xQueueGenericSend(queue, item, block_time_tick, queueSEND_TO_FRONT);
+}
+
+static int32_t queue_recv_wrapper(void *queue, void *item, uint32_t block_time_tick)
+{
+    if (block_time_tick == OSI_FUNCS_TIME_BLOCKING) {
+        return (int32_t)xQueueReceive(queue, item, portMAX_DELAY);
+    } else {
+        return (int32_t)xQueueReceive(queue, item, block_time_tick);
+    }
+}
+
+static uint32_t event_group_wait_bits_wrapper(void *event, uint32_t bits_to_wait_for, int clear_on_exit, int wait_for_all_bits, uint32_t block_time_tick)
+{
+    if (block_time_tick == OSI_FUNCS_TIME_BLOCKING) {
+        return (uint32_t)xEventGroupWaitBits(event, bits_to_wait_for, clear_on_exit, wait_for_all_bits, portMAX_DELAY);
+    } else {
+        return (uint32_t)xEventGroupWaitBits(event, bits_to_wait_for, clear_on_exit, wait_for_all_bits, block_time_tick);
+    }
+}
+
+static int32_t task_create_pinned_to_core_wrapper(void *task_func, const char *name, uint32_t stack_depth, void *param, uint32_t prio, void *task_handle, uint32_t core_id)
+{
+    return (uint32_t)xTaskCreatePinnedToCore(task_func, name, stack_depth, param, prio, task_handle, (core_id < portNUM_PROCESSORS ? core_id : tskNO_AFFINITY));
+}
+
+static int32_t task_create_wrapper(void *task_func, const char *name, uint32_t stack_depth, void *param, uint32_t prio, void *task_handle)
+{
+    return (uint32_t)xTaskCreate(task_func, name, stack_depth, param, prio, task_handle);
+}
+
+static int32_t IRAM_ATTR task_ms_to_tick_wrapper(uint32_t ms)
+{
+    return (int32_t)(ms / portTICK_PERIOD_MS);
+}
+
+static int32_t task_get_max_priority_wrapper(void)
+{
+    return (int32_t)(configMAX_PRIORITIES);
+}
+
+static int32_t esp_event_post_wrapper(const char* event_base, int32_t event_id, void* event_data, size_t event_data_size, uint32_t ticks_to_wait)
+{
+    if (ticks_to_wait == OSI_FUNCS_TIME_BLOCKING) {
+        return (int32_t)esp_event_post(event_base, event_id, event_data, event_data_size, portMAX_DELAY);
+    } else {
+        return (int32_t)esp_event_post(event_base, event_id, event_data, event_data_size, ticks_to_wait);
+    }
+}
+
+static void IRAM_ATTR wifi_apb80m_request_wrapper(void)
+{
+#ifdef CONFIG_PM_ENABLE
+    wifi_apb80m_request();
+#endif
+}
+
+static void IRAM_ATTR wifi_apb80m_release_wrapper(void)
+{
+#ifdef CONFIG_PM_ENABLE
+    wifi_apb80m_release();
+#endif
+}
+
+static void IRAM_ATTR timer_arm_wrapper(void *timer, uint32_t tmout, bool repeat)
+{
+    ets_timer_arm(timer, tmout, repeat);
+}
+
+static void IRAM_ATTR timer_disarm_wrapper(void *timer)
+{
+    ets_timer_disarm(timer);
+}
+
+static void timer_done_wrapper(void *ptimer)
+{
+    ets_timer_done(ptimer);
+}
+
+static void timer_setfn_wrapper(void *ptimer, void *pfunction, void *parg)
+{
+    ets_timer_setfn(ptimer, pfunction, parg);
+}
+
+static void IRAM_ATTR timer_arm_us_wrapper(void *ptimer, uint32_t us, bool repeat)
+{
+    ets_timer_arm_us(ptimer, us, repeat);
+}
+
+static void wifi_reset_mac_wrapper(void)
+{
+    SET_PERI_REG_MASK(SYSCON_WIFI_RST_EN_REG, SYSTEM_MAC_RST);
+    CLEAR_PERI_REG_MASK(SYSCON_WIFI_RST_EN_REG, SYSTEM_MAC_RST);
+}
+
+static void IRAM_ATTR wifi_rtc_enable_iso_wrapper(void)
+{
+#if CONFIG_MAC_BB_PD
+    esp_mac_bb_power_down();
+    SET_PERI_REG_MASK(SYSCON_WIFI_RST_EN_REG, SYSTEM_MAC_RST);
+#endif
+}
+
+static void IRAM_ATTR wifi_rtc_disable_iso_wrapper(void)
+{
+#if CONFIG_MAC_BB_PD
+    esp_mac_bb_power_up();
+    SET_PERI_REG_MASK(SYSCON_WIFI_RST_EN_REG, SYSTEM_MAC_RST);
+    CLEAR_PERI_REG_MASK(SYSCON_WIFI_RST_EN_REG, SYSTEM_MAC_RST);
+#endif
+}
+
+static void wifi_clock_enable_wrapper(void)
+{
+    wifi_module_enable();
+}
+
+static void wifi_clock_disable_wrapper(void)
+{
+    wifi_module_disable();
+}
+
+static int get_time_wrapper(void *t)
+{
+    return os_get_time(t);
+}
+
+static uint32_t esp_clk_slowclk_cal_get_wrapper(void)
+{
+    /* The bit width of WiFi light sleep clock calibration is 12 while the one of
+     * system is 19. It should shift 19 - 12 = 7.
+    */
+    return (esp_clk_slowclk_cal_get() >> (RTC_CLK_CAL_FRACT - SOC_WIFI_LIGHT_SLEEP_CLK_WIDTH));
+}
+
+static void * IRAM_ATTR malloc_internal_wrapper(size_t size)
+{
+    return heap_caps_malloc(size, MALLOC_CAP_8BIT|MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL);
+}
+
+static void * IRAM_ATTR realloc_internal_wrapper(void *ptr, size_t size)
+{
+    return heap_caps_realloc(ptr, size, MALLOC_CAP_8BIT|MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL);
+}
+
+static void * IRAM_ATTR calloc_internal_wrapper(size_t n, size_t size)
+{
+    return heap_caps_calloc(n, size, MALLOC_CAP_8BIT|MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL);
+}
+
+static void * IRAM_ATTR zalloc_internal_wrapper(size_t size)
+{
+    void *ptr = heap_caps_calloc(1, size, MALLOC_CAP_8BIT|MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL);
+    return ptr;
+}
+
+static esp_err_t nvs_open_wrapper(const char* name, uint32_t open_mode, nvs_handle_t *out_handle)
+{
+    return nvs_open(name,(nvs_open_mode_t)open_mode, out_handle);
+}
+
+static void esp_log_writev_wrapper(uint32_t level, const char *tag, const char *format, va_list args)
+{
+    return esp_log_writev((esp_log_level_t)level,tag,format,args);
+}
+
+static void esp_log_write_wrapper(uint32_t level,const char *tag,const char *format, ...)
+{
+    va_list list;
+    va_start(list, format);
+    esp_log_writev((esp_log_level_t)level, tag, format, list);
+    va_end(list);
+}
+
+static esp_err_t esp_read_mac_wrapper(uint8_t* mac, uint32_t type)
+{
+    return esp_read_mac(mac, (esp_mac_type_t)type);
+}
+
+static int coex_init_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_init();
+#else
+    return 0;
+#endif
+}
+
+static void coex_deinit_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    coex_deinit();
+#endif
+}
+
+static int coex_enable_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_enable();
+#else
+    return 0;
+#endif
+}
+
+static void coex_disable_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    coex_disable();
+#endif
+}
+
+static IRAM_ATTR uint32_t coex_status_get_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_status_get();
+#else
+    return 0;
+#endif
+}
+
+static void coex_condition_set_wrapper(uint32_t type, bool dissatisfy)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    coex_condition_set(type, dissatisfy);
+#endif
+}
+
+static int coex_wifi_request_wrapper(uint32_t event, uint32_t latency, uint32_t duration)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_wifi_request(event, latency, duration);
+#else
+    return 0;
+#endif
+}
+
+static IRAM_ATTR int coex_wifi_release_wrapper(uint32_t event)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_wifi_release(event);
+#else
+    return 0;
+#endif
+}
+
+static int coex_wifi_channel_set_wrapper(uint8_t primary, uint8_t secondary)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_wifi_channel_set(primary, secondary);
+#else
+    return 0;
+#endif
+}
+
+static IRAM_ATTR int coex_event_duration_get_wrapper(uint32_t event, uint32_t *duration)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_event_duration_get(event, duration);
+#else
+    return 0;
+#endif
+}
+
+static int coex_pti_get_wrapper(uint32_t event, uint8_t *pti)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_pti_get(event, pti);
+#else
+    return 0;
+#endif
+}
+
+static void coex_schm_status_bit_clear_wrapper(uint32_t type, uint32_t status)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    coex_schm_status_bit_clear(type, status);
+#endif
+}
+
+static void coex_schm_status_bit_set_wrapper(uint32_t type, uint32_t status)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    coex_schm_status_bit_set(type, status);
+#endif
+}
+
+static IRAM_ATTR int coex_schm_interval_set_wrapper(uint32_t interval)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_schm_interval_set(interval);
+#else
+    return 0;
+#endif
+}
+
+static uint32_t coex_schm_interval_get_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_schm_interval_get();
+#else
+    return 0;
+#endif
+}
+
+static uint8_t coex_schm_curr_period_get_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_schm_curr_period_get();
+#else
+    return 0;
+#endif
+}
+
+static void * coex_schm_curr_phase_get_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_schm_curr_phase_get();
+#else
+    return NULL;
+#endif
+}
+
+static int coex_schm_curr_phase_idx_set_wrapper(int idx)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_schm_curr_phase_idx_set(idx);
+#else
+    return 0;
+#endif
+}
+
+static int coex_schm_curr_phase_idx_get_wrapper(void)
+{
+#if CONFIG_SW_COEXIST_ENABLE || CONFIG_EXTERNAL_COEX_ENABLE
+    return coex_schm_curr_phase_idx_get();
+#else
+    return 0;
+#endif
+}
+
+static void IRAM_ATTR esp_empty_wrapper(void)
+{
+
+}
+
+wifi_osi_funcs_t g_wifi_osi_funcs = {
+    ._version = ESP_WIFI_OS_ADAPTER_VERSION,
+    ._env_is_chip = env_is_chip_wrapper,
+    ._set_intr = set_intr_wrapper,
+    ._clear_intr = clear_intr_wrapper,
+    ._set_isr = set_isr_wrapper,
+    ._ints_on = enable_intr_wrapper,
+    ._ints_off = disable_intr_wrapper,
+    ._is_from_isr = is_from_isr_wrapper,
+    ._spin_lock_create = spin_lock_create_wrapper,
+    ._spin_lock_delete = free,
+    ._wifi_int_disable = wifi_int_disable_wrapper,
+    ._wifi_int_restore = wifi_int_restore_wrapper,
+    ._task_yield_from_isr = task_yield_from_isr_wrapper,
+    ._semphr_create = semphr_create_wrapper,
+    ._semphr_delete = semphr_delete_wrapper,
+    ._semphr_take = semphr_take_wrapper,
+    ._semphr_give = semphr_give_wrapper,
+    ._wifi_thread_semphr_get = wifi_thread_semphr_get_wrapper,
+    ._mutex_create = mutex_create_wrapper,
+    ._recursive_mutex_create = recursive_mutex_create_wrapper,
+    ._mutex_delete = mutex_delete_wrapper,
+    ._mutex_lock = mutex_lock_wrapper,
+    ._mutex_unlock = mutex_unlock_wrapper,
+    ._queue_create = queue_create_wrapper,
+    ._queue_delete = (void(*)(void *))vQueueDelete,
+    ._queue_send = queue_send_wrapper,
+    ._queue_send_from_isr = queue_send_from_isr_wrapper,
+    ._queue_send_to_back = queue_send_to_back_wrapper,
+    ._queue_send_to_front = queue_send_to_front_wrapper,
+    ._queue_recv = queue_recv_wrapper,
+    ._queue_msg_waiting = (uint32_t(*)(void *))uxQueueMessagesWaiting,
+    ._event_group_create = (void *(*)(void))xEventGroupCreate,
+    ._event_group_delete = (void(*)(void *))vEventGroupDelete,
+    ._event_group_set_bits = (uint32_t(*)(void *,uint32_t))xEventGroupSetBits,
+    ._event_group_clear_bits = (uint32_t(*)(void *,uint32_t))xEventGroupClearBits,
+    ._event_group_wait_bits = event_group_wait_bits_wrapper,
+    ._task_create_pinned_to_core = task_create_pinned_to_core_wrapper,
+    ._task_create = task_create_wrapper,
+    ._task_delete = (void(*)(void *))vTaskDelete,
+    ._task_delay = vTaskDelay,
+    ._task_ms_to_tick = task_ms_to_tick_wrapper,
+    ._task_get_current_task = (void *(*)(void))xTaskGetCurrentTaskHandle,
+    ._task_get_max_priority = task_get_max_priority_wrapper,
+    ._malloc = malloc,
+    ._free = free,
+    ._event_post = esp_event_post_wrapper,
+    ._get_free_heap_size = esp_get_free_internal_heap_size,
+    ._rand = esp_random,
+    ._dport_access_stall_other_cpu_start_wrap = esp_empty_wrapper,
+    ._dport_access_stall_other_cpu_end_wrap = esp_empty_wrapper,
+    ._wifi_apb80m_request = wifi_apb80m_request_wrapper,
+    ._wifi_apb80m_release = wifi_apb80m_release_wrapper,
+    ._phy_disable = esp_phy_disable,
+    ._phy_enable = esp_phy_enable,
+    ._phy_update_country_info = esp_phy_update_country_info,
+    ._read_mac = esp_read_mac_wrapper,
+    ._timer_arm = timer_arm_wrapper,
+    ._timer_disarm = timer_disarm_wrapper,
+    ._timer_done = timer_done_wrapper,
+    ._timer_setfn = timer_setfn_wrapper,
+    ._timer_arm_us = timer_arm_us_wrapper,
+    ._wifi_reset_mac = wifi_reset_mac_wrapper,
+    ._wifi_clock_enable = wifi_clock_enable_wrapper,
+    ._wifi_clock_disable = wifi_clock_disable_wrapper,
+    ._wifi_rtc_enable_iso = wifi_rtc_enable_iso_wrapper,
+    ._wifi_rtc_disable_iso = wifi_rtc_disable_iso_wrapper,
+    ._esp_timer_get_time = esp_timer_get_time,
+    ._nvs_set_i8 = nvs_set_i8,
+    ._nvs_get_i8 = nvs_get_i8,
+    ._nvs_set_u8 = nvs_set_u8,
+    ._nvs_get_u8 = nvs_get_u8,
+    ._nvs_set_u16 = nvs_set_u16,
+    ._nvs_get_u16 = nvs_get_u16,
+    ._nvs_open = nvs_open_wrapper,
+    ._nvs_close = nvs_close,
+    ._nvs_commit = nvs_commit,
+    ._nvs_set_blob = nvs_set_blob,
+    ._nvs_get_blob = nvs_get_blob,
+    ._nvs_erase_key = nvs_erase_key,
+    ._get_random = os_get_random,
+    ._get_time = get_time_wrapper,
+    ._random = os_random,
+    ._slowclk_cal_get = esp_clk_slowclk_cal_get_wrapper,
+    ._log_write = esp_log_write_wrapper,
+    ._log_writev = esp_log_writev_wrapper,
+    ._log_timestamp = esp_log_timestamp,
+    ._malloc_internal =  malloc_internal_wrapper,
+    ._realloc_internal = realloc_internal_wrapper,
+    ._calloc_internal = calloc_internal_wrapper,
+    ._zalloc_internal = zalloc_internal_wrapper,
+    ._wifi_malloc = wifi_malloc,
+    ._wifi_realloc = wifi_realloc,
+    ._wifi_calloc = wifi_calloc,
+    ._wifi_zalloc = wifi_zalloc_wrapper,
+    ._wifi_create_queue = wifi_create_queue_wrapper,
+    ._wifi_delete_queue = wifi_delete_queue_wrapper,
+    ._coex_init = coex_init_wrapper,
+    ._coex_deinit = coex_deinit_wrapper,
+    ._coex_enable = coex_enable_wrapper,
+    ._coex_disable = coex_disable_wrapper,
+    ._coex_status_get = coex_status_get_wrapper,
+    ._coex_condition_set = coex_condition_set_wrapper,
+    ._coex_wifi_request = coex_wifi_request_wrapper,
+    ._coex_wifi_release = coex_wifi_release_wrapper,
+    ._coex_wifi_channel_set = coex_wifi_channel_set_wrapper,
+    ._coex_event_duration_get = coex_event_duration_get_wrapper,
+    ._coex_pti_get = coex_pti_get_wrapper,
+    ._coex_schm_status_bit_clear = coex_schm_status_bit_clear_wrapper,
+    ._coex_schm_status_bit_set = coex_schm_status_bit_set_wrapper,
+    ._coex_schm_interval_set = coex_schm_interval_set_wrapper,
+    ._coex_schm_interval_get = coex_schm_interval_get_wrapper,
+    ._coex_schm_curr_period_get = coex_schm_curr_period_get_wrapper,
+    ._coex_schm_curr_phase_get = coex_schm_curr_phase_get_wrapper,
+    ._coex_schm_curr_phase_idx_set = coex_schm_curr_phase_idx_set_wrapper,
+    ._coex_schm_curr_phase_idx_get = coex_schm_curr_phase_idx_get_wrapper,
+    ._magic = ESP_WIFI_OS_ADAPTER_MAGIC,
+};
+
+coex_adapter_funcs_t g_coex_adapter_funcs = {
+    ._version = COEX_ADAPTER_VERSION,
+    ._task_yield_from_isr = task_yield_from_isr_wrapper,
+    ._semphr_create = semphr_create_wrapper,
+    ._semphr_delete = semphr_delete_wrapper,
+    ._semphr_take_from_isr = semphr_take_from_isr_wrapper,
+    ._semphr_give_from_isr = semphr_give_from_isr_wrapper,
+    ._semphr_take = semphr_take_wrapper,
+    ._semphr_give = semphr_give_wrapper,
+    ._is_in_isr = xPortInIsrContext,
+    ._malloc_internal =  malloc_internal_wrapper,
+    ._free = free,
+    ._esp_timer_get_time = esp_timer_get_time,
+    ._magic = COEX_ADAPTER_MAGIC,
+};

components/esp_wifi/include/esp_private/wifi_os_adapter.h

@@ -109,7 +109,7 @@ typedef struct {
     int (* _get_random)(uint8_t *buf, size_t len);
     int (* _get_time)(void *t);
     unsigned long (* _random)(void);
-#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3
+#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C2
     uint32_t (* _slowclk_cal_get)(void);
 #endif
     void (* _log_write)(uint32_t level, const char* tag, const char* format, ...);

components/esp_wifi/include/esp_wifi_types.h

@@ -276,7 +276,11 @@ typedef struct {
     uint32_t reserved:27;    /**< bit: 5..31 reserved */
 } wifi_sta_info_t;
 
+#if CONFIG_IDF_TARGET_ESP32C2
+#define ESP_WIFI_MAX_CONN_NUM  (4)        /**< max number of stations which can connect to ESP32C2 soft-AP */
+#else
 #define ESP_WIFI_MAX_CONN_NUM  (10)       /**< max number of stations which can connect to ESP32 soft-AP */
+#endif
 
 /** @brief List of stations associated with the ESP32 Soft-AP */
 typedef struct {
@@ -346,7 +350,7 @@ typedef struct {
     unsigned sgi:1;               /**< Short Guide Interval(SGI). 0: Long GI; 1: Short GI */
 #if CONFIG_IDF_TARGET_ESP32
     signed noise_floor:8;         /**< noise floor of Radio Frequency Module(RF). unit: dBm*/
-#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3
+#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C2
     unsigned :8;                  /**< reserved */
 #endif
     unsigned ampdu_cnt:8;         /**< ampdu cnt */
@@ -357,7 +361,7 @@ typedef struct {
     unsigned :32;                 /**< reserved */
 #if CONFIG_IDF_TARGET_ESP32S2
     unsigned :32;                 /**< reserved */
-#elif CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3
+#elif CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C2
     signed noise_floor:8;         /**< noise floor of Radio Frequency Module(RF). unit: dBm*/
     unsigned :24;                 /**< reserved */
     unsigned :32;                 /**< reserved */
@@ -367,7 +371,7 @@ typedef struct {
 #if CONFIG_IDF_TARGET_ESP32S2
     signed noise_floor:8;         /**< noise floor of Radio Frequency Module(RF). unit: dBm*/
     unsigned :24;                 /**< reserved */
-#elif CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3
+#elif CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C2
     unsigned :32;                 /**< reserved */
     unsigned :32;                 /**< reserved */
     unsigned :32;                 /**< reserved */

components/soc/esp32c2/include/soc/soc_caps.h

@@ -268,3 +268,9 @@
 #define SOC_PM_SUPPORT_WIFI_WAKEUP      (1)
 
 #define SOC_PM_SUPPORT_BT_WAKEUP        (1)
+
+#define SOC_PM_SUPPORT_CPU_PD           (0)
+
+#define SOC_PM_SUPPORT_WIFI_PD          (0)
+
+#define SOC_PM_SUPPORT_BT_PD            (0)